Recovery of byproduct heavy minerals from Oregon and Washington sand and gravel operations

I tiakina i:
Ngā taipitopito rārangi puna kōrero
Kaituhi matua: Martinez, G. M. (George M)
Ētahi atu kaituhi: Gomes, J. M. (John M.), Wong, M. M. (Morton Min), 1924-
Hōputu: Pukapuka
Reo:Ingarihi
I whakaputaina: Washington U.S. Dept. of the Interior, Bureau of Mines 1981
Rangatū:Report of investigations 8563
Ngā marau:
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